| 1 | FRV | WISCONSIN CENTRAL [FOX VALLEY & WESTERN, LTD.; FOX RIVER VALLEY RAILROAD] | | | PWRC |
| 2 | FRV | Fox River Valley Railroad (Wisconsin Central) | | | RSRV |
| 3 | FRV | Ferrovia Rezzato-Vobarno | | I | TRAFFIC |
| 4 | FRV | Ferrovias e Construções S.A. | | PT | VKM |
| 5 | FRVC | FOREST RIVER COLONY | | | SCAC4 |
| 6 | FRVE | FRISK, VERNON E | | | SCAC3 |
| 7 | FRVG | FROESE VEGETABLES INC | | | SCAC4 |
| 8 | FRVL | FRONTIER VAN LINES INC | | | SCAC3 |
| 9 | FRVM | FREIGHT MOVERS | | | SCAC4 |
| 10 | FRVN | FREEDOM VAN LINES | | | SCAC3 |
| 11 | FRVP | FRASERWAY RV LP | | | SCAC4 |
| 12 | FRVQ | FRESNO VAN & STORAGE CO | | | SCAC3 |
| 13 | FRVR | Fox Valley & Western, Ltd. | added 1/1994; 7/2000 | | NAKINA |
| 14 | FRVR | Fox River Valley R.R. Corp. | added 4/1989; eliminated 1/1994 | | NAKINA |
| 15 | FRVR | Fox River Valley R.R. Corp. | added 4/89; eliminated 1/94 | | NRHS |
| 16 | FRVR | Fox Valley & Western, Ltd. | added 1/94; 7/2000 | | NRHS |
| 17 | FRVR | WISCONSIN CENTRAL [FOX VALLEY & WESTERN, LTD.; FOX RIVER VALLEY RAILROAD] | | | PWRC |
| 18 | FRVR | Fox Valley and Western | | | RSRV |
| 19 | FRVR | FOX RIVER VALLEY RAILROAD CORPORATI | | | SCAC3 |
| 20 | FRVR | Fox River Valley R.R. Corp. | | USA | TRAFFIC |
| 21 | FRVS | FALLON MOVING & STORAGE INC | | | SCAC4 |
| 22 | FRVT | Fore River Transportation Corp. | 7/2005 (not listed) | | NAKINA |
| 23 | FRVT | FORE RIVER TRANSPORTATION CORP. | | | PWRC |
| 24 | FRVT | FORE RIVER TRANSPORTATION CORPORATI | | | SCAC4 |
| 25 | FRVV | FLETES RAPIDOS VILI | | | SCAC4 |
